Analog Devices Inc. AD8622 Low Power, Precision Operational Amplifiers

Analog Devices AD8622 Low Power, Precision Operational Amplifiers are dual, precision rail-to-rail output operational amplifiers with a low supply current of only 350μA maximum over temperature and supply voltages. The AD8622 op-amps also offer ultra-low offset, drift, and voltage noise combined with a very low input bias current over the full operating temperature range. With a typical offset voltage of only 10μV, offset drift of 0.5μV/°C, and noise of only 0.2μV p-p (0.1Hz to 10Hz), these devices are well suited for applications where large error sources cannot be tolerated. Many systems can benefit from the low noise, DC precision, and rail-to-rail output swing achieved by the AD8622 op-amps.

The devices maximize the signal-to-noise ratio and dynamic range for low power operation. Specified for the extended industrial temperature range of −40°C to +125°C, and available in lead-free SOIC and MSOP packages, the AD8622 op amps are ideal for portable precision instrumentation, laser diode control loops, medical instrumentation, strain gage amplifiers, and thermocouple amplifiers.

Features

  • Very low offset voltage: 125μV maximum
  • Supply current: 215μA/amp typical
  • Input bias current: 200pA maximum
  • Low input offset voltage drift: 1.2μV/°C maximum
  • Very low voltage noise: 11nV/√Hz
  • Operating temperature: −40°C to +125°C
  • Rail-to-rail output swing
  • Unity gain stable
  • ±2.5V to ±15V operation

Applications

  • Portable precision instrumentation
  • Laser diode control loops
  • Strain gage amplifiers
  • Medical instrumentation
  • Thermocouple amplifiers
Published: 2015-09-10 | Updated: 2022-03-11